Question: An electron has a de Broglie wavelength that is the same as the wavelength of a 2.50 x 1014 Hz photon. What is the

An electron has a de Broglie wavelength that is the same as

An electron has a de Broglie wavelength that is the same as the wavelength of a 2.50 x 1014 Hz photon. What is the speed of the electron? Give your answer in m/s but do NOT include units in your answer

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